All are pre-fertilization events, except

Solution:

Pre-fertilization events in sexual reproduction include gametogenesis (formation of gametes) and gamete transfer (bringing male and female gametes together). Pollination is a type of gamete transfer in flowering plants. Syngamy is the fusion of male and female gametes, which is the process of fertilization. Fertilization is a separate event that occurs after pre-fertilization events and before post-fertilization events. Therefore, syngamy is not a pre-fertilization event.